KJisgroovy said: "It was already produced."
It was already recorded. Produced in the recording industry means a lot of things that make it not the same as how we think of the term in the theatre. I know. I tried it once. With an emphasis on once.
Aside from mixing it, probably fixing it, making sense of it, you also have to pay for it. That price tag will be well into six figures. Everyone has to be paid because anyone can file a lawsuit seeking to enjoin a release that has been stolen. I could write a few more pages of observations but the bottom line will be the same: no one in their right mind is going to do what it would take to release it, which would involve a ton of hands on work as well as funds, all in aid of what? a show that was a major floperoo as well as a train wreck of monumental proportions. In the words of Lefty Ruggiero, fuhgeddaboudit.